Isaiah 28:21 - Exposition

The Lord shall rise up as in Mount Perazim . The "Mount Perazim" of this passage is probably the same as the "Baal-Perazim" of 1 Chronicles 14:11 , where David completely defeated the Philistines by the Divine help. This victory is connected with another over the same nation in the valley of Gibeon ( 1 Chronicles 14:13-16 ). Now, however, God was to be on the side of the enemies of his people, who were to suffer as the Philistines had suffered in the olden time. This punishment of Ida own people by the sword of foreigners was strange work on God's part—a strange act . But it was their strange conduct which caused God's strange action. They had become as it were, Philistines.